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Old Aug 1, 2006 | 08:44 PM
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St. Jude Donor '06-'11
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Hello, my 1998 is showing several codes. I searched and found most, does anyone know what P1545H is? And C1255H....what is a ECU malfunction? I replaced the Batt. a few weeks ago, could this have caused so many codes? It is showing about 20. The only problem I have is my A/C is not working?
Thanks Paul
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Old Aug 1, 2006 | 08:56 PM
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From: NY- 2013 Corvette Challenge Champion-2013 Index Combo Champion 2015 CC/MM Champion
St. Jude Donor '07
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Originally Posted by pauly1119
Hello, my 1998 is showing several codes. I searched and found most, does anyone know what P1545H is? And C1255H....what is a ECU malfunction? I replaced the Batt. a few weeks ago, could this have caused so many codes? It is showing about 20. The only problem I have is my A/C is not working?
Thanks Paul
P1545 A/C clutch relay control curcuit. C1255 EBTCM internal Malf (ABS/TCS Disabled)
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Old Aug 1, 2006 | 09:02 PM
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P1545 A/C clutch relay control curcuit.....Is this why my A/C is not working.........is this a part I can replace.....or is it part of the compressor?
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Old Aug 1, 2006 | 09:05 PM
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Just curious here, did you clear ALL codes after replacing the battery?. I replaced mine a few weeks ago and checked the DIC for codes and there were lots, I cleared them all and have not had 1 since.
Hope this helps.
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Old Aug 1, 2006 | 09:14 PM
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Originally Posted by FFIN90
Just curious here, did you clear ALL codes after replacing the battery?. I replaced mine a few weeks ago and checked the DIC for codes and there were lots, I cleared them all and have not had 1 since.
Hope this helps.

No I did not, I quess I should try that first??. Most of the codes are communication codes.
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Old Aug 1, 2006 | 09:30 PM
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Okay I reset the codes, then the pull key wait 10 sec crap came on.....
but that went off. Codes P1539H, P1545, and P1546C are all clutch relay. Is this just a relay some place? Or is it the compressor? The only problem with the car is my A/C. I jumped the Compressor from the fuse box and it blows cold.

Thanks Paul
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